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PTT SWITCHES |
| Single PTT switches | ||||||
| All PTT switches can be supplied with either red button switches or momentary toggle switches. | ||||||
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| PTT-1C
bar-mounted switch with red button and coiled lead. DIN plug fits Mk1-BB
intercom. Available with RCA ( phono) plug for Mk2 intercoms. |
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| Dual PTT switches | ||||||
| Can be supplied as single coiled cable with 2 switches, or 2 coiled cables each with a switch. | ||||||
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| Dual
PTT switches for dual radio use. One button for Airband radio, one
button for PMR radio. Can be supplied with longer interconnecting cable, straight or coiled (between the switches) for use as P1/P2 dual transmission instructor use (requires COR-1 or COS-1 fitted to intercom) |
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| Dual
PTT switches for P1 & P2 transmission use. (requires COR-1 or COS-1 fitted to
intercom) Here shown with (momentary) toggle switches. Normally supplied with red buttons (as above) |
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| PTT USER INSTRUCTIONS | ||||||
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Push To Talk, release
to listen. The red button switch is maintenance free.
The toggle switch used in this PTT contains sliding metal parts and as such requires occasional lubrication.
A light machine oil such as
"3-in-1" is recommended. Two or three drops introduced where
the toggle enters the body of the switch is sufficient.
DO NOT USE WD40 OR ANY SIMILAR SOLVENT
This will effectively flush out any
lubricant and will eventually lead to a sticking switch.
There is a small degree of sideways
movement in the toggle. This is not a fault.
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| SYMPTOMS OF A STUCK SWITCH (continuously transmitting) | ||||||
Toggle/button remains in the down position.
(unplug PTT from intercom and repair or
replace).
P2 unable to communicate with P1.
(P2 mike is mute during transmissions)
Radio traffic goes quiet.
(Other users of the frequency are blocked by
your continuous Tx)
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Stuck switches are very rare events but not unknown, so it's best to recognize the symptoms! |
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